A student protester carrying a board walks next to a mock tombstone during a march in Hong Kong

 
A student protester carrying a board walks next to a mock tombstone during a march in Hong Kong
A student protester carrying a board walks next to a mock tombstone, symbolizing those who died during the June 4 military crackdown on the pro-democracy movement at Beijing's Tiananmen Square 23 years ago, during a march in Hong Kong May 27, 2012. The demonstration was to mark the upcoming anniversary of the military crackdown on the pro-democracy movement in Beijing's Tiananmen Square on June 4, 1989. The Chinese characters on the mock tombstone read, "Democratic Martyr, Non-Perishable". REUTERS/Tyrone Siu (CHINA - Tags: POLITICS ANNIVERSARY CIVIL UNREST)